2. Given the structure and the flow net detailed in Figure 2. The coefficient of permeability (i.e. the hydraulic conductivity) of the soil is 5.0 × 10-$ m/s. (1) Identify all of the boundary conditions. (2) Determine the quantity of seepage. (3) What is the uplift force on the base of the structure? (4) Determine the water pressure at Point A.

3. The upward flow of water through a layer of sand in the tank shown in figure has the following properties: e =0.50, G-2.67. Determine the following: a) Effective stress at point A b) Effective stress at point B c) Upward seepage force per unit volume of soil 0.8m 3.5m Supply of Water 0.5m A B 1.9m

FLOW OF WATER THROUGH STRATIFIED SOIL 1. Horizontal Flow 1 (K,h, +k2h2 +k3h3. K,hn) KHea 2. Vertical Flow H Kr ea = h h2 h3 h. k, k2 k3 Kn Where: h's = height of each layered soil k's = coefficient of permeability of each layered soil H= total height of stratified soil Ky eg = equivalent coefficient of permeability PROBLEM 2: Find the equivalent vertical permeability of a layered soil with the following data: H1 = 5 m H2 = 2 m H3 = 4 m a. 10.14 x 10-5 C. 7.63 x 10-3 k= 10-2 cm/sec k= 1.9x10-2 cm/sec k= 3.8x104 cm/sec b. 6.87 x 10-5 d. 9.88 x 10-4

Determine the increase of pore water pressure at M due to the infinite strip loading shown in Figure Q3. Assume y= 0.5 and A-0.6. Im Clay 4m 2m 9-100kN/m² 4m Figure Q3 M G.W.T.

What advantages does the automated method have over the manual method?

Problem (2) The following data are for a variable head permeability test: Area of soil specimen=1200mm? Length of the soil specimen = 150mm Area of the standpipe = 1.3cm² At time t=0, head difference = 750mm At time t=2min, head difference = 500mm 2 %3D a) Find the hydraulic conductivity of the soil in cm/min.